@article{05031295,
title = {Tzitzeica-B\"acklund theorems.},
journal = {Balkan Journal of Geometry and its Applications (BJGA)},
volume = {10},
year = {2005},
pages = {108-109},
zbl = {1095.53009},
language = {en},
url = {http://dml.mathdoc.fr/item/05031295}
}
Teleman, Kostake; Teleman, Ana-Maria. Tzitzeica-Bäcklund theorems.. Balkan Journal of Geometry and its Applications (BJGA), Tome 10 (2005) pp. 108-109. http://gdmltest.u-ga.fr/item/05031295/